18mm Female to 14mm Male

Features:

• Made up of high-quality strong glass to prevent cracking and absorbing shocks to the glass without breaking the adapter.
• The adapter's feasible dimensions and lightweight make it very handy and easy to carry on parties and vacations. 
• Adjustable: allows you to adjust with variety of different male rigs.
• The dropdown feature prevents you from burning your face and radiates the heat away from the glass body hence protecting the glass from deforming or cracking.
• Increased life: you don't to worry about replacing the entire system after some time. You should ensure regular cleaning of the glass to make it more durable. 
• It is designed to particularly allow you a larger control over the air and to ensure that you make perfect hits.
• You don't have to bother about burning your face or deforming the glass while using it. The product's aim is to ensure stress-free and relaxed experience for you.
• The crystal-clear glass allows you to monitor the air from outside and also notice any leftover due which is an indication to clean the glass as soon as possible.

Specifications:

• Body Type: Strong shock absorbent Glass.
• Fits on 14mm male/female joint/glass.
• Dimensions: 18mm on both sides. 
• Height: 3 inches.